Navalyze · Oil tanker · Ship

SEABLISS

IMO: 9587207
Type: Oil tanker
Average cargo carried: 59,261 t
Flag (estimated): Malta
Port of registry: Valletta
Technical efficiency: EEXI 2.81 g CO₂/t·nm
Former names: VINGA

ISM company (DoC holder) in 2025: Thenamaris Ships Management Inc. · part of Thenamaris

Report year

2021 at a glance

From the 2021 THETIS-MRV report. Carries about 72,860 t of cargo on average.

Fuel kg/nm

159

Oil tanker median 129 kg/nm (+23%)

CO₂ per transport work (cargo)

6.81

g CO₂/t·nm · Oil tanker median 8.86 (−23%)

Average speed

9.4 kn

Oil tanker median 10.7 kn (−12%)

Fuel per day at sea

35.9 t/day

Fuel consumed

5,553 t

CO₂ emitted

17,349 t

Distance sailed

34,965 nm

CO₂ ÷ CO₂ per mile

Time at sea

3,711 h

155 days, 42% of the year

Within the oil tanker fleet, 2025

Set against all 1,665 oil tanker ships with a full-year 2025 report. Bigger ships burn more per mile but less per tonne of cargo, so read fuel per mile with the ship's size in mind.

Fuel kg/nmThis ship 218 kg/nm · median 129 (+70%)

76.1Ranks 1,580 of 1,665, lowest first191

Average speedThis ship 5.4 kn · median 10.7 (−50%)

8.0Faster than 1% of oil tanker ships12.1

CO₂ per transport work (cargo)This ship 11.6 g CO₂/t·nm · median 7.95 (+46%)

4.51Ranks 1,185 of 1,665, lowest first27.7

Middle 80% of shipsMiddle 50%Oil tanker medianThis ship

Where the emissions happen, 2021

THETIS splits each ship's CO₂ by voyage type. The split sets how much falls under the EU ETS: all of it within the EU and at berth, half of it on voyages into or out of the EU.

Between EU ports3%
From the EU33%
Into the EU57%
At berth in the EU7%

Fuel burned laden

–

Not reported

CO₂ at berth

1,225 t

7.1% of the ship's CO₂, alongside in EU ports

Methane (CH₄)

–

Mainly from LNG; small for oil, biofuel and methanol

CO₂eq uplift

–

CO₂eq on top of CO₂ alone, from CH₄ and N₂O

Over the years

Full-year reports only. The Oil tanker median is the middle ship of all oil tanker ships reporting that year; it moves with the fleet, so a ship can gain on it without changing itself.

Fuel kg/nm

SEABLISS
Oil tanker median

125.0150.0175.0200.0225.0

’182018’192019’212021’222022’232023’242024’252025

Average speed, kn

SEABLISS
Oil tanker median

4.06.08.010.012.0

’182018’192019’212021’222022’232023’242024’252025

CO₂ per transport work (cargo), g CO₂/t·nm

SEABLISS
Oil tanker median

4.06.08.010.012.0

’182018’192019’212021’222022’232023’242024’252025

Year on year

Year	Average speed	Fuel kg/nm	Fuel per day at sea	Distance	CO₂ per transport work	Reading
2024→2025	−2.5 kn	+48%	+1%	−18%	+26%	2.5 kn slower, fuel per mile up 48%; worse than speed alone explains (fouling, weather, loading or trade).
2023→2024	−1.0 kn	+1%	−11%	+7%	+56%	1.0 kn slower, fuel per mile flat; worse than speed alone explains (fouling, weather, loading or trade).
2022→2023	+1.9 kn	−24%	−4%	+461%	−40%	1.9 kn faster, fuel per mile down 24%; better than speed alone explains (hull, engine or trade).
2021→2022	−2.4 kn	+22%	−9%	−87%	+45%	2.4 kn slower, fuel per mile up 22%; worse than speed alone explains (fouling, weather, loading or trade).
2019→2021	+0.4 kn	+1%	+6%	+12%	−5%	0.4 kn faster, fuel per mile flat; better than speed alone explains (hull, engine or trade).
2018→2019	+4.3 kn	−25%	+45%	−3%	−31%	4.3 kn faster, fuel per mile down 25%; better than speed alone explains (hull, engine or trade).

Fuel per mile rises roughly with the square of speed for a given ship, so a change in speed explains much of a change in fuel per mile.

Every reporting year

One row per THETIS-MRV report. A ship that changed operator during a year has a part-year report for each.

Operation

Year	ISM company	Fuel t	CO₂ t	Distance nm	Hours at seah	Average speedknots at sea	Fuel kg/nmthis ship	CO₂ per transport work (cargo)g/t·nm, this ship	Laden fuel
2025	Thenamaris Ships Management Inc.	4,861	15,356	22,280	4,157	5.4	218	11.6	–
2024	Thenamaris Ships Management Inc.	4,021	12,623	27,260	3,468	7.9	148	9.23	–
2023	not published	3,744	11,799	25,581	2,883	8.9	146	5.91	–
2022	not published	882	2,789	4,557	651	7.0	194	9.86	–
2021	not published	5,553	17,349	34,965	3,711	9.4	159	6.81	–
2019	not published	4,942	15,409	31,349	3,492	9.0	158	7.15	–
2018	not published	6,793	21,274	32,432	6,966	4.7	209	10.4	–

Benchmark and verification

Year	ISM company	CO₂ per TW, g CO₂/t·nm	Oil tanker median	vs Oil tanker	Rank	Verifier	Methods
2025	Thenamaris Ships Management Inc.	11.6	7.95	+46%	1,185 of 1,665	RINA	B+C
2024	Thenamaris Ships Management Inc.	9.23	8.06	+15%	1,076 of 1,787	RINA	B+C
2023	not published	5.91	8.44	−30%	408 of 1,797	RINA	B+C
2022	not published	9.86	8.51	+16%	1,177 of 1,961	RINA	B+C
2021	not published	6.81	8.86	−23%	560 of 1,789	Verifavia	A
2019	not published	7.15	8.83	−19%	645 of 1,919	Verifavia	A
2018	not published	10.4	8.86	+18%	1,082 of 1,779	DNV	C

Fuel per mile and CO₂ per tonne-mile are the ship's own reported KPIs. Oil tanker ships are benchmarked on CO₂ per transport work (cargo) (TW), in g CO₂/t·nm. CO₂eq adds methane and nitrous oxide and is in the public files from 2024. Rank counts from the lowest figure among that year's oil tanker ships. Methods: A delivery notes, B tank monitoring, C flow meters, D direct measurement. FuelEU GHG intensity is not shown: it needs fuel types, which the public file does not carry. Operators are named only from 2024, the first year the public files carry them; earlier years belong to the ship, not to any company.